If 'P' is any point on the circumference of the circle `x^(2) + y^(2) - 4x - 4y -8 =0` , then the perpendicular distance of the tangent at P from the centre of the circle is

To the circle x^(2)+y^(2)-8x-4y+4=0 tangent at the point theta=(pi)/4 is

To the circle x^(2)+y^(2)+8x-4y+4=0 tangent at the point theta=(pi)/(4) is

The equation of the tangent to the circle x^(2)+y^(2)+8x-4y-5=0 and perpendicular to 2x+3y+5=0 are

The difference between the radii of the largest and smallest circles which have their centres on the circumference of the circle x^2 + y^2 + 2x + 4y -4 = 0 and passes through point (a,b) lying outside the circle is :

The difference between the radii of the largest and smallest circles which have their centres on the circumference of the circle x^2 + y^2 + 2x + 4y -4 = 0 and passes through point (a,b) lying outside the circle is :

Length of tangent from (8,6) to the circle x^(2)+y^(2)-3x-4y+2=0

To the circle x^(2)+y^(2)+8x-4y+4=0 tangent at the point theta=(pi)/4 is

The greatest distance of the point P(10,7) from the circle x^(2) + y^(2) -4x -2y -20 =0 is